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Data-Aided Frequency-Domain 2⨉2 MIMO Equalizer for 112 Gbit/s PDM-QPSK Coherent Transmission Systems

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Benefits of a low-complexity adaptive 32-tap 2⨉2 MIMO frequency-domain filter update by data-aided channel estimation over a time-domain filter with DD-LMS are shown. Superior stability and convergence speed is demonstrated with identical impairment tolerance.

© 2012 Optical Society of America

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